Sum of Angles in a Triangle - JSS1 Mathematics Past Questions and Answers - page 1
What is the sum of angles in an equilateral triangle?
120∘
150∘
180∘
210∘
In a triangle where two angles are 40∘ each, what is the measure of the third angle?
50∘
60∘
70∘
80∘
What is the sum of angles in a triangle if one angle is 90∘ and the other two angles are 45 ∘ each?
120∘
135∘
180∘
225∘
If one angle in a triangle is 80∘ and another is 60∘, what is the measure of the third angle?
20∘
30∘
40∘
50∘
What type of triangle always has its angles summing up to 180∘ ?
Equilateral triangle
Isosceles triangle
Scalene triangle
Any triangle
In a triangle where one angle is 100 ∘, what are the measures of the other two angles?
40∘ and 40∘
50∘ and 50∘
80∘ and 100∘
80∘ and 90∘
In triangle ABC, angle A is 50∘ and angle B is 70 ∘. What is the measure of angle C?
Angle C = 180∘−50∘−70∘=60∘
Triangle PQR has angles measuring 30∘, 60 ∘, and 𝑥∘. What is the value of 𝑥?
𝑥 =180∘−30∘−60∘=90∘
Triangle XYZ is an equilateral triangle. What is the measure of each angle?
Each angle = 180∘/3=60∘
In triangle DEF, angle D is 80∘ and angle E is 40∘. What is the measure of angle F?
Angle F = 180∘−80∘−40∘=60∘